# Forces and elasticity (Part 2)

In this lesson we carry on looking at elastic objects, and the relationship between force and extension. We also go through the results of our required practical.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, letâ€™s see what you can remember from this topic. Hereâ€™s a quick quiz!

Q1.Choose all three objects that will elastically deform

Select three (3) boxes

1/5

Q2.A student wants to investigate how force affects extension of a spring. What is the independent variable?

2/5

Q3.A student wants to investigate how force affects extension of a spring. What is the dependent variable?

3/5

Q4.What does elastic deformation mean?

4/5

Q5.Identify the relationship between force and extension in objects that elastically deform.

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, letâ€™s see what you can remember from this topic. Hereâ€™s a quick quiz!

Q1.Choose all three objects that will elastically deform

Select three (3) boxes

1/5

Q2.A student wants to investigate how force affects extension of a spring. What is the independent variable?

2/5

Q3.A student wants to investigate how force affects extension of a spring. What is the dependent variable?

3/5

Q4.What does elastic deformation mean?

4/5

Q5.Identify the relationship between force and extension in objects that elastically deform.

5/5

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the â€˜Resume Videoâ€™ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click â€˜Nextâ€™ below.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Forces and Elasticity 2

Complete the quiz to see how much you have remembered.

Q1.What is the equation that links extension, force and spring constant?

1/7

Q2.What store of energy is increased when an elastic object is stretched or compressed?

2/7

Q3.Whose law refers to the relationship between force and extension of an elastic object?

3/7

Q4.What does elastically deform mean?

4/7

Q5.What name is given to the point where a spring no longer returns to its original shape when stretched?

5/7

Q6.What does Hooke's law state?

6/7

Q7.Calculate the force required to extend a spring by 0.4m when the spring has a spring constant of 5 N/m.

7/7

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

# Forces and Elasticity 2

Complete the quiz to see how much you have remembered.

Q1.What is the equation that links extension, force and spring constant?

1/7

Q2.What store of energy is increased when an elastic object is stretched or compressed?

2/7

Q3.Whose law refers to the relationship between force and extension of an elastic object?

3/7

Q4.What does elastically deform mean?

4/7

Q5.What name is given to the point where a spring no longer returns to its original shape when stretched?

5/7

Q6.What does Hooke's law state?

6/7

Q7.Calculate the force required to extend a spring by 0.4m when the spring has a spring constant of 5 N/m.

7/7

# Lesson summary: Forces and elasticity (Part 2)

## It looks like you have not completed one of the quizzes.

To share your results with your teacher please complete one of the quizzes.

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Climb stairs

On the spot:
Chair yoga